PySimpleGUI / PySimpleGUI/PySimpleGUI

[Bug] Grabbing a window by the Title bar and moving it around focuses without the <FocusIn> event

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Bug Port - TK
Dominant language
Python
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Description

Type of Issue

Bug


Operating System

Windows 10

PySimpleGUI Port

tkinter


Versions

Python version

Python 3.10.6

PySimpleGUI Version

PySimpleGUI 4.60.4

GUI Version

tkinter 8.6.12


Your Experience In Months or Years (optional)

4 Years Python programming experience

5 Years Programming experience overall

Have used another Python GUI Framework? (tkinter, Qt, etc) (yes/no is fine)
No, i have not

Anything else you think would be helpful?


Troubleshooting

These items may solve your problem. Please check those you've done by changing - [ ] to - [X]

  • Searched main docs for your problem www.PySimpleGUI.org
  • Looked for Demo Programs that are similar to your goal. It is recommend you use the Demo Browser! Demos.PySimpleGUI.org
  • If not tkinter - looked for Demo Programs for specific port
  • For non tkinter - Looked at readme for your specific port if not PySimpleGUI (Qt, WX, Remi)
  • Run your program outside of your debugger (from a command line)
  • Searched through Issues (open and closed) to see if already reported Issues.PySimpleGUI.org
  • Have upgraded to the latest release of PySimpleGUI on PyPI (lastest official version)
  • Tried using the PySimpleGUI.py file on GitHub. Your problem may have already been fixed but not released
Detailed Description

When dealing with multiple windows, i tracked the focused window using the and events. When clicking a window, these events get called normally. When grabbing a window by the Title bar and moving it around however, it is then focused without the events. Simply clicking on the Title Bar however focuses it with the events.

Code To Duplicate

A short program that isolates and demonstrates the problem


import PySimpleGUI as sg


#create two layouts
win1Layout = [
    [sg.Text('Win1')],
]
win2Layout = [
    [sg.Text('Win2')],
]

#size is important to make aenough room on the title bar to grab the windows
win1 = sg.Window('Win1', layout=win1Layout, size=(300, 100), finalize=True)
win2 = sg.Window('Win2', layout=win2Layout, size=(300, 100), finalize=True)

#bind the events to the windows
win1.bind('<FocusIn>', "WIN1FocusIn")
win1.bind('<FocusOut>', "WIN1FocusOut")
win2.bind('<FocusIn>', "WIN2FocusIn")
win2.bind('<FocusOut>', "WIN2FocusOut")


while True:
    activeWindow, event, values = sg.read_all_windows(timeout=500)

    if event == sg.WIN_CLOSED:
        break

    if not event == "__TIMEOUT__":
        print(event)

Screenshot, Sketch, or Drawing

Watcha Makin?

Im a Student working in a company between semesters and have been tasked with creating a program to write certain Tables to the EEPROM of the devices we are selling

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by running the supplied minimal reproduction on Windows 10 and inspect the tkinter port's window focus and event-binding handling. Done means dragging a window by its title bar produces the expected FocusIn and FocusOut events consistently, while preserving the behavior of ordinary title-bar clicks.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
desktop
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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